Windows 10: unable to remove old email address

unable to remove old email address it says new address already used ? it is my email address

:)

 

remove old email address

need assistance in removing an old email address from microsoft accounts after old email provider closed down

 

Delete old email sign in address

Hi,

Difficulties verifying the old security details in your Microsoft account may result in errors canceling or removing the profile. For us to rectify the account removal concern, we'd like to verify the following information:

• Where exactly are you prompted to sign in with the old email address?
• Have you tried resetting the password for the old account to recover it?
• Were you able to log in successfully on your account online?
• Have you made any significant changes to your account prior to this happening?
• What troubleshooting steps have you taken so far?

Your reply is highly appreciated.

 

Auto Suggest - Old email addresses

Hello,

Thank you for posting your query in Microsoft Community.

I understand your concern. There is, however, no setting in Mail app to disable the auto-complete setting, you can certainly accomplish this in Outlook web app on your system. Refer to the following steps to do so:

• Sign in to Outlook Web App, and in the To, Cc, or
  Bcc lines, start typing part of the name you want to remove from the Auto-Complete List. For information about how to sign in to Outlook Web App, see
  
  Sign in to Outlook Web App.
  
  
• If the entry you want to remove is highlighted, choose Delete. If the entry you want to delete is not selected, use the Up Arrow and Down Arrow to navigate to the entry you want to delete, and then choose
  Delete.

For more information, please refer to the following article:

Remove suggested name or email address
from the Auto-Complete List in Outlook Web App

Hope this information is helpful. Do let us know if you need any further assistance, we will be glad to assist you.